Cut-out suspension-pulley.



- G. S. MOON. OUT-OUT SUSPENSION PULLEY. APPLIOATION FILED APB. 13.1907.

91 1,252. Patented Feb. 2, 1909. a SHEETS-SHEET 1.

Wflnsses Inventor GI SI i OUT-OUT SUSPENSION PULLEY.

APPLICATION FILED APR. 13. 1901.

91 1, 252. PatentedFeb. 2, 1909.

3 BHEHTS-SHEBT 2.

G. S. MODN. GUT-OUT SUSPENSION PULLEY. urmonxon FILED APB. 13.1907.

Patented Feb. 2, 1909.

3 SHEETS-SHEET 8.

- Inventor s PE7IRS cm. WASHINGTON, 0. cv

CHARLES MOON, OFTOPEKA, KANSAS.

. OUT-OUT SUSPENSION-PULLEY.

Specification of Letters Patent.

Patented Feb. 2, 1909.

Application filed April s, 1907. Serial No. 367,974.

To all whom it may concern:

Be it known that I, CHARLES S. MOON, a

citizen of the United States, residing at Topeka, in the county of Shawnee and State of Kansas, have invented a new and useful Improvement in Cut-Out Suspension-Pulleys, of which the following is a specification.

My invention relates to cut-out suspension pulleys for street lamps, and it is adapted both for electric lamps connected inseries and for those connected in multiple,

It comprises essentially two members, one of which is permanently secured to the span wire, and the other of which holds the lam and is adapted to be raised and lowered an to be clutched by the upper member,- the.

line wires are connected to the up verrnernoer, and the parts. are so arrangedt at when the lower member and thelamp are lowered (as for the purpose of cleaning, or repairing, or the like) the lamp will automatically become out out from the circuit, and the circuit will automatically become closed, or will remain open, according to whether the lamp is connected in series or in multiple.

The invention consists in the special arrangement of the switches in thespecial devices for locking the two members together; and in the parts, improvements, and combinations herein set forth and claimed.

In the drawings accompanyin and .;form ing part of this specification, anc. in the description thereof, I have shown my invention in its preferred form and what I-deem to be the best mode of applying the principles thereof; but it is to be understood that I contemplate changes in form, proportions, materials, arrangement, the transposition of parts, and the substitution of ecpuivalent members, within the scope'of the appended claims, without departing from the spirit'of the invention. 1 p

Figure 1 is a side elevation of a cut-out suspension pulley made in accordance with the principles of my invention and adapted for a lamp connected in a series circuit; the inclosing hood being shown nferelyin section. Fig. 2 is a view of one end merely to show the arrangement of the switches. Fig. .3 is.

a vertical central sectional view of the de-- vice, parts being broken away; this view be ing taken through the line 3 -3, in Figs. 1

'throughthe me 4 of Fig. 3.

device.

and 6. Fig. 4 is a sectional view of the locking device in articular, taken a proximately Fi 5 is a sectional view taken approximately through theline'5 of Fig. 4. Fig. 6 is a plan view, the shank of the upper member being shown in cross-section, through the line 6 of Figs. 1 and 3. Figs. 7, 8, and 9 are partial views, similar to Fig. 4, designed particularly to show the operation of the automatic locking Fig. 7 shows the lower member entirely disengaged from the upper member Fig. 8 shows the action of the parts in auto- 'matically locking the lower member to the upper member; and Fi 9 shows the action in automatically unlocii-ng the lower memberi'rom the upper member.

' Similar reference numerals indicate like or corresponding parts throughout the several views.

.- Arranged in the up; er member 10 is a pulley 11 which trave s on the span wireJ Another 12 is provided for the drop-cord 23. Holes .13, 13 may be provided above and below the span wire for the guy or brace wires for holding the device in proper erect position; it being understood thatthe guy or brace Wires maybe extended in one dire0- tion and the line wires .in the op osite directic-n, whereby the. suspension p.11. ley is properly held in desired position on the s an wire.

14 is a circular plate covering e entire [switching and locking apparatus, and on the under side of this 1 late is a strip of porcelain 15 or other suitab e insulator; and from this strip are suspended the two pairs of switchsprings 16, 17 and 16, 17. Preferably the two members of each pair are not arranged exactly opposite each other, but are laterally separated, but each has a lateral arm 18, so

arranged that these arms make the contact between the springs. The object of this arrangement is, that if it is desired to use the ulley'in a, series circuit, these arms may be eft .as they are shown in the drawings; but

if it is desired to use the ulley in a multiple circuit, these arms may%e out oii, or bent backggin which. latter. case no contact will be madewhen the lower member is withdrawn. A hood 139 ma be provided, attached around, the of t e plate 14}, to protect the parts from the weather. Depending centrally from the upper member is a shank or lunger 20 having a rib 21 on each side and a liole 22 through the middle for the dropcord 23.

24 may represent the base of the lower member. At each end it is insulated as at 25, and thereon it carries the lower members 26, 27 of the switches. At the lower end of the hollow extension 28 is fitted the cap or stopper 29, held in place by a pin 30, and thereto is secured the end of the drop-cord in any suitable manner, as by knotting its end as shown. Two arms 31, 31 extend downward and carry an insulator 32 on which the lamp may be directly hung. Obviously, therefore, the lamp may be raised and lowered with the lower member by the drop-cord 23; and the object of the devices about to be described is to bring the switches to register, to automatically lo ck the two members together and to automatically unlock them all by the operation of the single drop-cord.

Extending up from the base 24 of the lower member is a tube or socket 33 in which the shank or plunger 20 of the upper member fits, and having two slots 34, 34 correspond ing to the two ribs 21, 21, of the shank20. Each of the two parts of the tube or socket 33 is pointed as at 35-; and at the lower end of the rib 21 is a roller 36 this arrangement serving to readily guide the ribs into the slots as the lower member is pulled into engagement with the upper member, and thus to bring all the co-acting parts into exact register. At its lower end each rib has a )rojection 37, whose function will presently be explained. For each rib, slot, and projection, there are a pair of standards 38, 38, arranged as shown in the drawings. Pivoted at 39 between the two standards is a latch 40, having a part thereof cut away as at 41 to allow the clearance of the projection 37 as will hereafter be the device is locked rests on the projection 37 and thus holds the lower member to the upper member. The foot of the latch, 43, in this position, engages the end 44 of a tumbler 45, thus preventing the latch from releasing the projection 37.

48 is a dog mounted in a lever 46 which is spring-pressed by the spring 47, and this dog normally lies in the path of a lug 49 on the adjacent face of the latch 40. Two corresponding faces of the dog and lug are beveled, and the other two are straight; so that as the latch is swung from position shown in Figs. 1, and 4 toward position shown in Fig. 8, the lug 49 will press back the dog 48 against the tension of the spring 47 the inner face of the dog-lever 47 and when the dog-lever so rests in this recess, the dog stands in the path of the lug 49 but when the said lever rests against the projection either above, 51, or below this recess, the dog will be withdrawn from the path of the lug 4S and thus permit it to pass from the position shown in Fig. 8 to the positions shown in. the other figures. The latch. is so balanced that naturally it tends to the position shown in Fig. 7 and the tumbler 45 is so weighted that it naturally rests in the position shown in Figs. 1, 3, 4, 5, 6, and 7.

A couple of insulators and pins, 60, (it), may be secured to the upper member, as shown, and the line wires attached thereto; the line wires may be led into the hood through suitable weather-proofed openings 61. One wire may be connected to the switch members 16, 16, and the other 71 to the members 17 17; and the lamp may be connected to the members 26, 26 and. 27, 27 respectively, by wires 72 and 73, respectively.

When the lamp is lowered the switches are, of course, disconnected from the lamp, and the circuit is closed or left open according to the presence or absence of the arm 13, as heretofore explained. The latch and tumbler occupy the positions shown in Fig. 7. 11', now, the lower member be drawn up, by

means of the drop-cord, it will be properlv guided into proper engagement with the upper member, as also hereinbeforc explained, the projection 37 will first strike against the nose 42 of the latch 40 and force the latch around some distance beyond the dog 48 (the passage of the lug 49 by the dog being permitted by reason of the beveled engaging faces), and as the )rojection 37 clears the nose 42, the latch will by the force of gravity return in the direction of the position shown in Fig. 7, but will be stopped by reason of the explained, and having a nose 42 which, when dog engaging the lug 49, in the position shown in Fig. 8. As the lower member is pulled still further up, the projection strikes the tumbler 45 and when the lower member is drawn up as far as it will go, the parts have the positions shown in Fig. 8. Now, on slacking the dropcord, thus letting the lower member be lowered again slightly, the tumbler 45 assumes its natural position when released from the projection 37; and as the upper part 51 of the projection 37 presses back the dog-lever and the dog, the lug 4.) is thus released from the dog and thus permits the latch to swing in the direction of its natural tendency until the foot 43 encounters the end 44 of the tumbler 45; and it is held in this position, with the nose 42 resting on the and will thus pass it; but the dog will not I projection 37, thus holding the lower mempermit the lug to pass in the opposite direcj ber locked to the upper member, and relievtion unless the lever be pressed back by ing the drop-cord of the weight of the lamp.

other means. The outer face of the projectron 37 is recessed as at 50 to correspond to This position is shown in Figs. 1, 3, 4, 5, and 6. To release the lock and lower the lamp,

c-i i e r as a mine... e parts to be in locked position as shown in igs. 1, 3, 4, 5, and 6 Thedrop-cord is pulled so as to again raise the lower member to the position shown in Fig. 9, the effect being 'to tip the tumbler also the latch-foot 43, being released from engagement with the tumbler 45, falls still further in the direction of its natural tendency and strikes against the projection 37 and above the end 44 of the tumbler. In this action, the lug 49 has not passed the dog 48, and hence there is nothing to prevent the latch from going to theposition shown in Fig. 7 except that the foot 43 strikes against the projection 37. Now, as the drop-cord islet out again, lowering the lower member, the foot 43 passes freely under the projection 37 (not being checked by the tumbler 45 which does not come to its' locked, etc.

In practice, the operation is a simple one. To look the device, the operator simply pulls the drop-cord to its limit and then lets out a little slack to permit the device to be locked; and to let down the lamp, he sim ly first pulls V the drop-cord slightly, and then ets it out.

A special feature of my invention is that all the working parts of the locking devlce are mounted in the lower memb er, thus glvmg ready access to same for purposes of adjusting cleaning, repairing, etc., without taking down the part which is secured to the span Wire.

I claim 1'. In a cut-out suspension pulley, the combination with an upper and a lower member, a cord secured to the lower member and passing over the upper member, of a hook on the upper member, and a latch, a tumbler, and a dog on the lower member for locking said lower member to and unlocking it from thesaid upper member.

2. In a cut-out suspension pulley, the.

combination with an upper and a lower member, a drop cord secured to the lower member and passing over the upper member,

of a hook on one of said members, and a latch, a tumbler, and a dog on the other member.

3. In a cut-out suspension pulley, the combination with anupper member and a lower member, a drop-cord," a hook on the upper member, and a latch, atumbler, and a dog on the lower member for locking said a tumbler controlled by the upper member for controlling the latch, and a dog for con- 11;)rolling the latch with relation to the tumler.

5. In a cut-out suspension pulley, the combination with an upper member adapted to be secured to the span-wire and having a hook, a lower member adapted to have the lamp suspended thereto and a drop-cord secured to the lower member and passing over the upper member; of a latch pivoted to the lower member and adapted to engage said hook and lock the lower member to the upper member, a tumbler controlled by the upper member to control the latch, and a dog controlled by the upper member to control the latch with reference to the tumbler.

6. In a cut-out suspension pulley, the combination of an upper member having a depending spindle with lugs and hooks on opposite sides thereof, a drop-cord, a lower member having a slotted tube to engage said spindle, and a latch, a tumbler, and a dog mounted on the lower member for each of said hooks and ada ted to lock said members together and to un ock them by the manipulation of said drop-cord.

7. In a cut-out suspension ulley, the combination of an upper memier and a lower member, adrop-cord, a spindle depending from said upper member and having on opposite sides a hook and a-lug, and said lower member having a slotted opening corresponding to said spindle; and a latch, a tumbler, and a dog for each hook and mounted on said lower member.

8. In a cut-out suspension pulley, the combination with an upper and a lower member, a drop-cord, of a hook depending from the upper member, a latch pivoted in the lower member, a tumbler ivoted in the lower member and operated y said upper member for controlling'the latch with relation to the'hook, and a dog operated by said upper member for controlling the latch with relation to the tumbler.

.9. In a cut-out suspension pulley, the combination of an upper member having a depending spindle with lugs and hooks on o posite sides thereof and an opening t rough the center thereof; a dro -cord; a lower member having a slotted tu e to engage said spindle, the segments of said tube being each pointed to guide said lugs and hooks into said slots, said lower member being secured to said drop-cord; a device mounted on the lower member for engaging each hook and comprising a latch to engage said hook, a tumbler controlled by the upper member to lock and unlock the latch, and a (log controlled by the upper member to control the latch With reference to the tumbler; all substantially as set forth.

In testimony whereof I have hereunto set my hand in the presence of subscribing witnesses.

CHARLES S. MOON. Witnesses Z. T. FIsHER, O. J. ROSEN. 

